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Sales Tax worksheet

Grade 7 · CCSS 7.RP.A.3

Solve each problem and show your work. Round answers to 2 decimal places where needed.

  1. Problem 1.
    • I know the…: Total including tax
    • Amount: $120
    • Sales tax rate: 8.5%

    Find: Price before tax

  2. Problem 2.
    • I know the…: Total including tax
    • Amount: $110
    • Sales tax rate: 9.5%

    Find: Price before tax

  3. Problem 3.
    • I know the…: Price before tax
    • Amount: $140
    • Sales tax rate: 10%

    Find: Total with tax

  4. Problem 4.
    • I know the…: Price before tax
    • Amount: $110
    • Sales tax rate: 7%

    Find: Total with tax

  5. Problem 5.
    • I know the…: Price before tax
    • Amount: $100
    • Sales tax rate: 9.5%

    Find: Total with tax

  6. Problem 6.
    • I know the…: Price before tax
    • Amount: $180
    • Sales tax rate: 12.25%

    Find: Total with tax

  7. Problem 7.
    • I know the…: Price before tax
    • Amount: $150
    • Sales tax rate: 9%

    Find: Total with tax

  8. Problem 8.
    • I know the…: Total including tax
    • Amount: $120
    • Sales tax rate: 6%

    Find: Price before tax

  9. Problem 9.
    • I know the…: Price before tax
    • Amount: $115
    • Sales tax rate: 5%

    Find: Total with tax

  10. Problem 10.
    • I know the…: Both prices (find the rate)
    • Price before tax: $110
    • Total paid including tax: $120

    Find: Sales tax rate

Answer key: Sales Tax worksheet

  1. 1. Price before tax: $110.60

    1. The total is the price plus the rate's share of it. So divide the total by 1 plus the rate (as a decimal) to get back the price before tax

      $120.00(1+0.085)=$110.60
    2. The tax is what's left: the total minus the price before tax

      $120.00−$110.60=$9.40
  2. 2. Price before tax: $100.46

    1. The total is the price plus the rate's share of it. So divide the total by 1 plus the rate (as a decimal) to get back the price before tax

      $110.00(1+0.095)=$100.46
    2. The tax is what's left: the total minus the price before tax

      $110.00−$100.46=$9.54
  3. 3. Total with tax: $154.00

    1. Multiply the price by the tax rate to get the tax

      $140.00×10%=$14.00
    2. Add the tax to the price to get what you pay

      $140.00+$14.00=$154.00
  4. 4. Total with tax: $117.70

    1. Multiply the price by the tax rate to get the tax

      $110.00×7%=$7.70
    2. Add the tax to the price to get what you pay

      $110.00+$7.70=$117.70
  5. 5. Total with tax: $109.50

    1. Multiply the price by the tax rate to get the tax

      $100.00×9.5%=$9.50
    2. Add the tax to the price to get what you pay

      $100.00+$9.50=$109.50
  6. 6. Total with tax: $202.05

    1. Multiply the price by the tax rate to get the tax

      $180.00×12.25%=$22.05
    2. Add the tax to the price to get what you pay

      $180.00+$22.05=$202.05
  7. 7. Total with tax: $163.50

    1. Multiply the price by the tax rate to get the tax

      $150.00×9%=$13.50
    2. Add the tax to the price to get what you pay

      $150.00+$13.50=$163.50
  8. 8. Price before tax: $113.21

    1. The total is the price plus the rate's share of it. So divide the total by 1 plus the rate (as a decimal) to get back the price before tax

      $120.00(1+0.06)=$113.21
    2. The tax is what's left: the total minus the price before tax

      $120.00−$113.21=$6.79
  9. 9. Total with tax: $120.75

    1. Multiply the price by the tax rate to get the tax

      $115.00×5%=$5.75
    2. Add the tax to the price to get what you pay

      $115.00+$5.75=$120.75
  10. 10. Sales tax rate: 9.091%

    1. The tax is the total paid minus the price before tax

      $120.00−$110.00=$10.00
    2. Divide the tax by the price before tax to see what share it is. Multiply by 100 to make it a percent

      $10.00$110.00×100=9.090909%